Updating and using the iOS 5 beta will be done at your own risk. Please be wary of the consequences and risks of using a beta firmware.

Today, Apple has released beta updates for all their enterprise products: iOS 5, iTunes 10.5, Xcode 4.2, and AppleTV. With the exception of iOS 5 beta 4 and AppleTV, all the other applications were updated to support the newly released iOS 5 beta. According to the release notes, this update should bring some much-needed improvements and bug fixes.

Just like iOS 5 beta 4, you can download it over-the-air. However, to do OTA, you must do this first on your device:

Settings > General > Reset > Erase All Contents And Settings

This will erase all the data on your device - make sure to backup first before doing this (if applicable). From here, you can use the OTA feature on iOS 5 beta 3+ firmwares.

You can also go the "original" route and just install iOS 5 beta 5 with the IPSW file. Make sure to do it in this order:

Backup/sync your device on iTunes 10.5 beta 4

Restore your device to iOS 5 beta 5

Update iTunes 10.5 to beta 5 and sync your backup with iTunes, or even iCloud

All supported devices for iOS 5 beta 5 are listed in the picture below:

To download the IPSW file for iOS 5 beta 5, or any of the other above released betas, visit the Apple Developer site. You must have a registered developer account to have access to these beta downloads.

I just upgraded to iOS5B4 doing it the way that Apple recommends. phone came back up, and I can get into the stock factory programs. But, I'm unable to open any of the apps that I've purchased through the App store. Anybody have any thoughts or suggestions?

Thanks!

I am NOT jailbroken.

ETA: Fixed the problem.. Downloaded a new app from the store and the others started working then.

I downloaded iOS 5 beta 5 OTA yesterday and since then I have not been able to receive any text messages.
I did not erase all content and settings before I updated because the update showed up fine without it. Could this have anything to do with my text messages not coming in?